If you were wondering what happened to waiting lists, they open late because of freshman registration. Waiting lists will be opened on July 21 at 9:00 a.m. and closed on August 22 at 5:00 p.m. Here are the directions for waitlisting a course: https://wl.mypurdue.purdue.edu/securesite/restricted/HelpDocs/pdf/Student_Wait_Listing.pdf.
Remember: If there are ANY numbers in the “WL Act” column, it means that there are people waiting for the course. This means there is NO actual space in the class, EVEN IF SPACE IS LISTED IN THE “REM” COLUMN. If there is a space listed in the “Rem” column, it’s because it’s been released to the first person on the waiting list who then has 16 hours to add it to their schedule. Please do NOT drop courses until you are absolutely sure there is no one waiting for the course. There are no go-backs; if you drop a course and it gets snatched up by someone else, it’s gone.